user
Calculate the average age of the members of the “Piano Lesson Group”

The members of the “Piano Lesson Group” are Maria (8 years old), Tyler (9 years old), Jessica (7 years old), and John (11 years old).


assistant
The average age of the members of the ‘Piano Lesson Group’ is 8.75 years, calculated by adding the ages of each member and then dividing the result by 4.